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Consolidated Statements Of Cash Flows (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Statement of Cash Flows [Abstract]    
Deferred tax benefit (provision) related to unrealized loss (gain) on investments $ (66) $ 583
Adjustments to postretirement benefits obligation, net of deferred tax (expense) benefit $ (30) $ (46)